From c8acd603ab3f519a4bfe159fe808dc94fb3d7b1d Mon Sep 17 00:00:00 2001 From: tb <> Date: Sun, 17 Mar 2019 17:42:37 +0000 Subject: Add the SM4 block cipher from the Chinese standard GB/T 32907-2016. This is an ISC licensed version based on the sources by Ribose Inc that were ported to OpenSSL in 2017. Patch from Daniel Wyatt with minor tweaks. ok inoguchi, jsing --- src/lib/libcrypto/Makefile | 8 +- src/lib/libcrypto/Symbols.list | 8 ++ src/lib/libcrypto/evp/c_all.c | 12 +- src/lib/libcrypto/evp/e_sm4.c | 113 +++++++++++++++ src/lib/libcrypto/evp/evp.h | 11 +- src/lib/libcrypto/objects/objects.txt | 16 +++ src/lib/libcrypto/sm4/sm4.c | 263 ++++++++++++++++++++++++++++++++++ src/lib/libcrypto/sm4/sm4.h | 51 +++++++ 8 files changed, 479 insertions(+), 3 deletions(-) create mode 100644 src/lib/libcrypto/evp/e_sm4.c create mode 100644 src/lib/libcrypto/sm4/sm4.c create mode 100644 src/lib/libcrypto/sm4/sm4.h diff --git a/src/lib/libcrypto/Makefile b/src/lib/libcrypto/Makefile index ef07324416..5d81193d80 100644 --- a/src/lib/libcrypto/Makefile +++ b/src/lib/libcrypto/Makefile @@ -1,4 +1,4 @@ -# $OpenBSD: Makefile,v 1.32 2019/01/23 00:50:39 tb Exp $ +# $OpenBSD: Makefile,v 1.33 2019/03/17 17:42:37 tb Exp $ LIB= crypto LIBREBUILD=y @@ -166,6 +166,7 @@ SRCS+= e_old.c pmeth_lib.c pmeth_fn.c pmeth_gn.c m_sigver.c SRCS+= e_aes_cbc_hmac_sha1.c e_rc4_hmac_md5.c SRCS+= e_chacha.c evp_aead.c e_chacha20poly1305.c SRCS+= e_gost2814789.c m_gost2814789.c m_gostr341194.c m_streebog.c +SRCS+= e_sm4.c SRCS+= m_md5_sha1.c # gost/ @@ -239,6 +240,9 @@ SRCS+= sha1dgst.c sha1_one.c sha256.c sha512.c # sm3/ SRCS+= sm3.c +# sm4/ +SRCS+= sm4.c + # stack/ SRCS+= stack.c @@ -319,6 +323,7 @@ SRCS+= pcy_cache.c pcy_node.c pcy_data.c pcy_map.c pcy_tree.c pcy_lib.c ${LCRYPTO_SRC}/rsa \ ${LCRYPTO_SRC}/sha \ ${LCRYPTO_SRC}/sm3 \ + ${LCRYPTO_SRC}/sm4 \ ${LCRYPTO_SRC}/stack \ ${LCRYPTO_SRC}/threads \ ${LCRYPTO_SRC}/ts \ @@ -380,6 +385,7 @@ HDRS=\ ${LCRYPTO_SRC}/rsa/rsa.h \ ${LCRYPTO_SRC}/sha/sha.h \ ${LCRYPTO_SRC}/sm3/sm3.h \ + ${LCRYPTO_SRC}/sm4/sm4.h \ ${LCRYPTO_SRC}/stack/safestack.h \ ${LCRYPTO_SRC}/stack/stack.h \ ${LCRYPTO_SRC}/ts/ts.h \ diff --git a/src/lib/libcrypto/Symbols.list b/src/lib/libcrypto/Symbols.list index 7ea2c5d135..63e3ee45ac 100644 --- a/src/lib/libcrypto/Symbols.list +++ b/src/lib/libcrypto/Symbols.list @@ -1631,6 +1631,11 @@ EVP_sha256 EVP_sha384 EVP_sha512 EVP_sm3 +EVP_sm4_cbc +EVP_sm4_cfb128 +EVP_sm4_ctr +EVP_sm4_ecb +EVP_sm4_ofb EVP_streebog256 EVP_streebog512 EVP_whirlpool @@ -2373,6 +2378,9 @@ SHA512_Update SM3_Final SM3_Init SM3_Update +SM4_decrypt +SM4_encrypt +SM4_set_key SMIME_crlf_copy SMIME_read_ASN1 SMIME_read_PKCS7 diff --git a/src/lib/libcrypto/evp/c_all.c b/src/lib/libcrypto/evp/c_all.c index 5ed55f67f6..cce3640866 100644 --- a/src/lib/libcrypto/evp/c_all.c +++ b/src/lib/libcrypto/evp/c_all.c @@ -1,4 +1,4 @@ -/* $OpenBSD: c_all.c,v 1.24 2018/12/26 15:11:04 tb Exp $ */ +/* $OpenBSD: c_all.c,v 1.25 2019/03/17 17:42:37 tb Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * @@ -227,6 +227,16 @@ OpenSSL_add_all_ciphers_internal(void) EVP_add_cipher(EVP_gost2814789_cfb64()); EVP_add_cipher(EVP_gost2814789_cnt()); #endif + +#ifndef OPENSSL_NO_SM4 + EVP_add_cipher(EVP_sm4_ecb()); + EVP_add_cipher(EVP_sm4_cbc()); + EVP_add_cipher(EVP_sm4_cfb()); + EVP_add_cipher(EVP_sm4_ofb()); + EVP_add_cipher(EVP_sm4_ctr()); + EVP_add_cipher_alias(SN_sm4_cbc, "SM4"); + EVP_add_cipher_alias(SN_sm4_cbc, "sm4"); +#endif } void diff --git a/src/lib/libcrypto/evp/e_sm4.c b/src/lib/libcrypto/evp/e_sm4.c new file mode 100644 index 0000000000..554915b29c --- /dev/null +++ b/src/lib/libcrypto/evp/e_sm4.c @@ -0,0 +1,113 @@ +/* $OpenBSD: e_sm4.c,v 1.1 2019/03/17 17:42:37 tb Exp $ */ +/* + * Copyright (c) 2017, 2019 Ribose Inc + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include + +#ifndef OPENSSL_NO_SM4 +#include +#include +#include + +#include "evp_locl.h" + +typedef struct { + SM4_KEY ks; +} EVP_SM4_KEY; + +static int +sm4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + SM4_set_key(key, ctx->cipher_data); + return 1; +} + +static void +sm4_cbc_encrypt(const unsigned char *in, unsigned char *out, size_t len, + const SM4_KEY *key, unsigned char *ivec, const int enc) +{ + if (enc) + CRYPTO_cbc128_encrypt(in, out, len, key, ivec, + (block128_f)SM4_encrypt); + else + CRYPTO_cbc128_decrypt(in, out, len, key, ivec, + (block128_f)SM4_decrypt); +} + +static void +sm4_cfb128_encrypt(const unsigned char *in, unsigned char *out, size_t length, + const SM4_KEY *key, unsigned char *ivec, int *num, const int enc) +{ + CRYPTO_cfb128_encrypt(in, out, length, key, ivec, num, enc, + (block128_f)SM4_encrypt); +} + +static void +sm4_ecb_encrypt(const unsigned char *in, unsigned char *out, const SM4_KEY *key, + const int enc) +{ + if (enc) + SM4_encrypt(in, out, key); + else + SM4_decrypt(in, out, key); +} + +static void +sm4_ofb128_encrypt(const unsigned char *in, unsigned char *out, size_t length, + const SM4_KEY *key, unsigned char *ivec, int *num) +{ + CRYPTO_ofb128_encrypt(in, out, length, key, ivec, num, + (block128_f)SM4_encrypt); +} + +IMPLEMENT_BLOCK_CIPHER(sm4, ks, sm4, EVP_SM4_KEY, NID_sm4, 16, 16, 16, 128, + EVP_CIPH_FLAG_DEFAULT_ASN1, sm4_init_key, NULL, 0, 0, 0) + +static int +sm4_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, + size_t len) +{ + EVP_SM4_KEY *key = EVP_C_DATA(EVP_SM4_KEY, ctx); + + CRYPTO_ctr128_encrypt(in, out, len, &key->ks, ctx->iv, ctx->buf, + &ctx->num, (block128_f)SM4_encrypt); + return 1; +} + +static const EVP_CIPHER sm4_ctr_mode = { + .nid = NID_sm4_ctr, + .block_size = 1, + .key_len = 16, + .iv_len = 16, + .flags = EVP_CIPH_CTR_MODE, + .init = sm4_init_key, + .do_cipher = sm4_ctr_cipher, + .cleanup = NULL, + .ctx_size = sizeof(EVP_SM4_KEY), + .set_asn1_parameters = NULL, + .get_asn1_parameters = NULL, + .ctrl = NULL, + .app_data = NULL, +}; + +const EVP_CIPHER * +EVP_sm4_ctr(void) +{ + return &sm4_ctr_mode; +} + +#endif diff --git a/src/lib/libcrypto/evp/evp.h b/src/lib/libcrypto/evp/evp.h index 0645303686..cd9b33c9b8 100644 --- a/src/lib/libcrypto/evp/evp.h +++ b/src/lib/libcrypto/evp/evp.h @@ -1,4 +1,4 @@ -/* $OpenBSD: evp.h,v 1.72 2019/01/22 00:59:21 dlg Exp $ */ +/* $OpenBSD: evp.h,v 1.73 2019/03/17 17:42:37 tb Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * @@ -837,6 +837,15 @@ const EVP_CIPHER *EVP_gost2814789_cfb64(void); const EVP_CIPHER *EVP_gost2814789_cnt(void); #endif +#ifndef OPENSSL_NO_SM4 +const EVP_CIPHER *EVP_sm4_ecb(void); +const EVP_CIPHER *EVP_sm4_cbc(void); +const EVP_CIPHER *EVP_sm4_cfb128(void); +#define EVP_sm4_cfb EVP_sm4_cfb128 +const EVP_CIPHER *EVP_sm4_ofb(void); +const EVP_CIPHER *EVP_sm4_ctr(void); +#endif + void OPENSSL_add_all_algorithms_noconf(void); void OPENSSL_add_all_algorithms_conf(void); diff --git a/src/lib/libcrypto/objects/objects.txt b/src/lib/libcrypto/objects/objects.txt index cf5fe69370..7aefca0b4a 100644 --- a/src/lib/libcrypto/objects/objects.txt +++ b/src/lib/libcrypto/objects/objects.txt @@ -1290,6 +1290,22 @@ kisa 1 5 : SEED-CFB : seed-cfb !Cname seed-ofb128 kisa 1 6 : SEED-OFB : seed-ofb +# Definitions for SM4 cipher + +member-body 156 : ISO-CN : ISO CN Member Body +ISO-CN 10197 : oscca +oscca 1 : sm-scheme + +sm-scheme 104 1 : SM4-ECB : sm4-ecb +sm-scheme 104 2 : SM4-CBC : sm4-cbc +!Cname sm4-ofb128 +sm-scheme 104 3 : SM4-OFB : sm4-ofb +!Cname sm4-cfb128 +sm-scheme 104 4 : SM4-CFB : sm4-cfb +sm-scheme 104 5 : SM4-CFB1 : sm4-cfb1 +sm-scheme 104 6 : SM4-CFB8 : sm4-cfb8 +sm-scheme 104 7 : SM4-CTR : sm4-ctr + # There is no OID that just denotes "HMAC" oddly enough... : HMAC : hmac diff --git a/src/lib/libcrypto/sm4/sm4.c b/src/lib/libcrypto/sm4/sm4.c new file mode 100644 index 0000000000..009c780fb5 --- /dev/null +++ b/src/lib/libcrypto/sm4/sm4.c @@ -0,0 +1,263 @@ +/* $OpenBSD: sm4.c,v 1.1 2019/03/17 17:42:37 tb Exp $ */ +/* + * Copyright (c) 2017, 2019 Ribose Inc + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include + +#ifndef OPENSSL_NO_SM4 +#include + +struct sm4_key { + uint32_t rk[SM4_KEY_SCHEDULE]; +}; + +static const uint8_t SM4_S[256] = { + 0xD6, 0x90, 0xE9, 0xFE, 0xCC, 0xE1, 0x3D, 0xB7, 0x16, 0xB6, 0x14, 0xC2, + 0x28, 0xFB, 0x2C, 0x05, 0x2B, 0x67, 0x9A, 0x76, 0x2A, 0xBE, 0x04, 0xC3, + 0xAA, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99, 0x9C, 0x42, 0x50, 0xF4, + 0x91, 0xEF, 0x98, 0x7A, 0x33, 0x54, 0x0B, 0x43, 0xED, 0xCF, 0xAC, 0x62, + 0xE4, 0xB3, 0x1C, 0xA9, 0xC9, 0x08, 0xE8, 0x95, 0x80, 0xDF, 0x94, 0xFA, + 0x75, 0x8F, 0x3F, 0xA6, 0x47, 0x07, 0xA7, 0xFC, 0xF3, 0x73, 0x17, 0xBA, + 0x83, 0x59, 0x3C, 0x19, 0xE6, 0x85, 0x4F, 0xA8, 0x68, 0x6B, 0x81, 0xB2, + 0x71, 0x64, 0xDA, 0x8B, 0xF8, 0xEB, 0x0F, 0x4B, 0x70, 0x56, 0x9D, 0x35, + 0x1E, 0x24, 0x0E, 0x5E, 0x63, 0x58, 0xD1, 0xA2, 0x25, 0x22, 0x7C, 0x3B, + 0x01, 0x21, 0x78, 0x87, 0xD4, 0x00, 0x46, 0x57, 0x9F, 0xD3, 0x27, 0x52, + 0x4C, 0x36, 0x02, 0xE7, 0xA0, 0xC4, 0xC8, 0x9E, 0xEA, 0xBF, 0x8A, 0xD2, + 0x40, 0xC7, 0x38, 0xB5, 0xA3, 0xF7, 0xF2, 0xCE, 0xF9, 0x61, 0x15, 0xA1, + 0xE0, 0xAE, 0x5D, 0xA4, 0x9B, 0x34, 0x1A, 0x55, 0xAD, 0x93, 0x32, 0x30, + 0xF5, 0x8C, 0xB1, 0xE3, 0x1D, 0xF6, 0xE2, 0x2E, 0x82, 0x66, 0xCA, 0x60, + 0xC0, 0x29, 0x23, 0xAB, 0x0D, 0x53, 0x4E, 0x6F, 0xD5, 0xDB, 0x37, 0x45, + 0xDE, 0xFD, 0x8E, 0x2F, 0x03, 0xFF, 0x6A, 0x72, 0x6D, 0x6C, 0x5B, 0x51, + 0x8D, 0x1B, 0xAF, 0x92, 0xBB, 0xDD, 0xBC, 0x7F, 0x11, 0xD9, 0x5C, 0x41, + 0x1F, 0x10, 0x5A, 0xD8, 0x0A, 0xC1, 0x31, 0x88, 0xA5, 0xCD, 0x7B, 0xBD, + 0x2D, 0x74, 0xD0, 0x12, 0xB8, 0xE5, 0xB4, 0xB0, 0x89, 0x69, 0x97, 0x4A, + 0x0C, 0x96, 0x77, 0x7E, 0x65, 0xB9, 0xF1, 0x09, 0xC5, 0x6E, 0xC6, 0x84, + 0x18, 0xF0, 0x7D, 0xEC, 0x3A, 0xDC, 0x4D, 0x20, 0x79, 0xEE, 0x5F, 0x3E, + 0xD7, 0xCB, 0x39, 0x48, +}; + +/* + * SM4_SBOX_T[j] == L(SM4_SBOX[j]). + */ +static const uint32_t SM4_SBOX_T[256] = { + 0x8ED55B5B, 0xD0924242, 0x4DEAA7A7, 0x06FDFBFB, 0xFCCF3333, 0x65E28787, + 0xC93DF4F4, 0x6BB5DEDE, 0x4E165858, 0x6EB4DADA, 0x44145050, 0xCAC10B0B, + 0x8828A0A0, 0x17F8EFEF, 0x9C2CB0B0, 0x11051414, 0x872BACAC, 0xFB669D9D, + 0xF2986A6A, 0xAE77D9D9, 0x822AA8A8, 0x46BCFAFA, 0x14041010, 0xCFC00F0F, + 0x02A8AAAA, 0x54451111, 0x5F134C4C, 0xBE269898, 0x6D482525, 0x9E841A1A, + 0x1E061818, 0xFD9B6666, 0xEC9E7272, 0x4A430909, 0x10514141, 0x24F7D3D3, + 0xD5934646, 0x53ECBFBF, 0xF89A6262, 0x927BE9E9, 0xFF33CCCC, 0x04555151, + 0x270B2C2C, 0x4F420D0D, 0x59EEB7B7, 0xF3CC3F3F, 0x1CAEB2B2, 0xEA638989, + 0x74E79393, 0x7FB1CECE, 0x6C1C7070, 0x0DABA6A6, 0xEDCA2727, 0x28082020, + 0x48EBA3A3, 0xC1975656, 0x80820202, 0xA3DC7F7F, 0xC4965252, 0x12F9EBEB, + 0xA174D5D5, 0xB38D3E3E, 0xC33FFCFC, 0x3EA49A9A, 0x5B461D1D, 0x1B071C1C, + 0x3BA59E9E, 0x0CFFF3F3, 0x3FF0CFCF, 0xBF72CDCD, 0x4B175C5C, 0x52B8EAEA, + 0x8F810E0E, 0x3D586565, 0xCC3CF0F0, 0x7D196464, 0x7EE59B9B, 0x91871616, + 0x734E3D3D, 0x08AAA2A2, 0xC869A1A1, 0xC76AADAD, 0x85830606, 0x7AB0CACA, + 0xB570C5C5, 0xF4659191, 0xB2D96B6B, 0xA7892E2E, 0x18FBE3E3, 0x47E8AFAF, + 0x330F3C3C, 0x674A2D2D, 0xB071C1C1, 0x0E575959, 0xE99F7676, 0xE135D4D4, + 0x661E7878, 0xB4249090, 0x360E3838, 0x265F7979, 0xEF628D8D, 0x38596161, + 0x95D24747, 0x2AA08A8A, 0xB1259494, 0xAA228888, 0x8C7DF1F1, 0xD73BECEC, + 0x05010404, 0xA5218484, 0x9879E1E1, 0x9B851E1E, 0x84D75353, 0x00000000, + 0x5E471919, 0x0B565D5D, 0xE39D7E7E, 0x9FD04F4F, 0xBB279C9C, 0x1A534949, + 0x7C4D3131, 0xEE36D8D8, 0x0A020808, 0x7BE49F9F, 0x20A28282, 0xD4C71313, + 0xE8CB2323, 0xE69C7A7A, 0x42E9ABAB, 0x43BDFEFE, 0xA2882A2A, 0x9AD14B4B, + 0x40410101, 0xDBC41F1F, 0xD838E0E0, 0x61B7D6D6, 0x2FA18E8E, 0x2BF4DFDF, + 0x3AF1CBCB, 0xF6CD3B3B, 0x1DFAE7E7, 0xE5608585, 0x41155454, 0x25A38686, + 0x60E38383, 0x16ACBABA, 0x295C7575, 0x34A69292, 0xF7996E6E, 0xE434D0D0, + 0x721A6868, 0x01545555, 0x19AFB6B6, 0xDF914E4E, 0xFA32C8C8, 0xF030C0C0, + 0x21F6D7D7, 0xBC8E3232, 0x75B3C6C6, 0x6FE08F8F, 0x691D7474, 0x2EF5DBDB, + 0x6AE18B8B, 0x962EB8B8, 0x8A800A0A, 0xFE679999, 0xE2C92B2B, 0xE0618181, + 0xC0C30303, 0x8D29A4A4, 0xAF238C8C, 0x07A9AEAE, 0x390D3434, 0x1F524D4D, + 0x764F3939, 0xD36EBDBD, 0x81D65757, 0xB7D86F6F, 0xEB37DCDC, 0x51441515, + 0xA6DD7B7B, 0x09FEF7F7, 0xB68C3A3A, 0x932FBCBC, 0x0F030C0C, 0x03FCFFFF, + 0xC26BA9A9, 0xBA73C9C9, 0xD96CB5B5, 0xDC6DB1B1, 0x375A6D6D, 0x15504545, + 0xB98F3636, 0x771B6C6C, 0x13ADBEBE, 0xDA904A4A, 0x57B9EEEE, 0xA9DE7777, + 0x4CBEF2F2, 0x837EFDFD, 0x55114444, 0xBDDA6767, 0x2C5D7171, 0x45400505, + 0x631F7C7C, 0x50104040, 0x325B6969, 0xB8DB6363, 0x220A2828, 0xC5C20707, + 0xF531C4C4, 0xA88A2222, 0x31A79696, 0xF9CE3737, 0x977AEDED, 0x49BFF6F6, + 0x992DB4B4, 0xA475D1D1, 0x90D34343, 0x5A124848, 0x58BAE2E2, 0x71E69797, + 0x64B6D2D2, 0x70B2C2C2, 0xAD8B2626, 0xCD68A5A5, 0xCB955E5E, 0x624B2929, + 0x3C0C3030, 0xCE945A5A, 0xAB76DDDD, 0x867FF9F9, 0xF1649595, 0x5DBBE6E6, + 0x35F2C7C7, 0x2D092424, 0xD1C61717, 0xD66FB9B9, 0xDEC51B1B, 0x94861212, + 0x78186060, 0x30F3C3C3, 0x897CF5F5, 0x5CEFB3B3, 0xD23AE8E8, 0xACDF7373, + 0x794C3535, 0xA0208080, 0x9D78E5E5, 0x56EDBBBB, 0x235E7D7D, 0xC63EF8F8, + 0x8BD45F5F, 0xE7C82F2F, 0xDD39E4E4, 0x68492121, +}; + +static inline uint32_t +rotl(uint32_t a, uint8_t n) +{ + return (a << n) | (a >> (32 - n)); +} + +static inline uint32_t +load_u32_be(const uint8_t *b, uint32_t n) +{ + return ((uint32_t)b[4 * n] << 24) | + ((uint32_t)b[4 * n + 1] << 16) | + ((uint32_t)b[4 * n + 2] << 8) | + ((uint32_t)b[4 * n + 3]); +} + +static inline void +store_u32_be(uint32_t v, uint8_t *b) +{ + b[0] = (uint8_t)(v >> 24); + b[1] = (uint8_t)(v >> 16); + b[2] = (uint8_t)(v >> 8); + b[3] = (uint8_t)(v); +} + +static inline uint32_t +SM4_T_slow(uint32_t X) +{ + uint32_t t = 0; + + t |= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24; + t |= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16; + t |= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8; + t |= SM4_S[(uint8_t)X]; + + /* + * L linear transform + */ + return t ^ rotl(t, 2) ^ rotl(t, 10) ^ rotl(t, 18) ^ rotl(t, 24); +} + +static inline uint32_t +SM4_T(uint32_t X) +{ + return SM4_SBOX_T[(uint8_t)(X >> 24)] ^ + rotl(SM4_SBOX_T[(uint8_t)(X >> 16)], 24) ^ + rotl(SM4_SBOX_T[(uint8_t)(X >> 8)], 16) ^ + rotl(SM4_SBOX_T[(uint8_t)X], 8); +} + +int +SM4_set_key(const uint8_t *key, SM4_KEY *k) +{ + struct sm4_key *ks = (struct sm4_key *)k; + + /* + * Family Key + */ + static const uint32_t FK[4] = { + 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc, + }; + + /* + * Constant Key + */ + static const uint32_t CK[32] = { + 0x00070E15, 0x1C232A31, 0x383F464D, 0x545B6269, + 0x70777E85, 0x8C939AA1, 0xA8AFB6BD, 0xC4CBD2D9, + 0xE0E7EEF5, 0xFC030A11, 0x181F262D, 0x343B4249, + 0x50575E65, 0x6C737A81, 0x888F969D, 0xA4ABB2B9, + 0xC0C7CED5, 0xDCE3EAF1, 0xF8FF060D, 0x141B2229, + 0x30373E45, 0x4C535A61, 0x686F767D, 0x848B9299, + 0xA0A7AEB5, 0xBCC3CAD1, 0xD8DFE6ED, 0xF4FB0209, + 0x10171E25, 0x2C333A41, 0x484F565D, 0x646B7279, + }; + + uint32_t K[4]; + int i; + + K[0] = load_u32_be(key, 0) ^ FK[0]; + K[1] = load_u32_be(key, 1) ^ FK[1]; + K[2] = load_u32_be(key, 2) ^ FK[2]; + K[3] = load_u32_be(key, 3) ^ FK[3]; + + for (i = 0; i < SM4_KEY_SCHEDULE; i++) { + uint32_t X; + uint32_t t = 0; + + X = K[(i + 1) % 4] ^ K[(i + 2) % 4] ^ K[(i + 3) % 4] ^ CK[i]; + + t |= ((uint32_t)SM4_S[(uint8_t)(X >> 24)]) << 24; + t |= ((uint32_t)SM4_S[(uint8_t)(X >> 16)]) << 16; + t |= ((uint32_t)SM4_S[(uint8_t)(X >> 8)]) << 8; + t |= SM4_S[(uint8_t)X]; + + t = t ^ rotl(t, 13) ^ rotl(t, 23); + K[i % 4] ^= t; + ks->rk[i] = K[i % 4]; + } + + return 1; +} + +#define SM4_ROUNDS(k0, k1, k2, k3, F) \ + do { \ + B0 ^= F(B1 ^ B2 ^ B3 ^ ks->rk[k0]); \ + B1 ^= F(B0 ^ B2 ^ B3 ^ ks->rk[k1]); \ + B2 ^= F(B0 ^ B1 ^ B3 ^ ks->rk[k2]); \ + B3 ^= F(B0 ^ B1 ^ B2 ^ ks->rk[k3]); \ + } while(0) + +void +SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *k) +{ + struct sm4_key *ks = (struct sm4_key *)k; + uint32_t B0 = load_u32_be(in, 0); + uint32_t B1 = load_u32_be(in, 1); + uint32_t B2 = load_u32_be(in, 2); + uint32_t B3 = load_u32_be(in, 3); + + /* + * Uses byte-wise sbox in the first and last rounds to provide some + * protection from cache based side channels. + */ + SM4_ROUNDS( 0, 1, 2, 3, SM4_T_slow); + SM4_ROUNDS( 4, 5, 6, 7, SM4_T); + SM4_ROUNDS( 8, 9, 10, 11, SM4_T); + SM4_ROUNDS(12, 13, 14, 15, SM4_T); + SM4_ROUNDS(16, 17, 18, 19, SM4_T); + SM4_ROUNDS(20, 21, 22, 23, SM4_T); + SM4_ROUNDS(24, 25, 26, 27, SM4_T); + SM4_ROUNDS(28, 29, 30, 31, SM4_T_slow); + + store_u32_be(B3, out); + store_u32_be(B2, out + 4); + store_u32_be(B1, out + 8); + store_u32_be(B0, out + 12); +} + +void +SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *k) +{ + struct sm4_key *ks = (struct sm4_key *)k; + uint32_t B0 = load_u32_be(in, 0); + uint32_t B1 = load_u32_be(in, 1); + uint32_t B2 = load_u32_be(in, 2); + uint32_t B3 = load_u32_be(in, 3); + + SM4_ROUNDS(31, 30, 29, 28, SM4_T_slow); + SM4_ROUNDS(27, 26, 25, 24, SM4_T); + SM4_ROUNDS(23, 22, 21, 20, SM4_T); + SM4_ROUNDS(19, 18, 17, 16, SM4_T); + SM4_ROUNDS(15, 14, 13, 12, SM4_T); + SM4_ROUNDS(11, 10, 9, 8, SM4_T); + SM4_ROUNDS( 7, 6, 5, 4, SM4_T); + SM4_ROUNDS( 3, 2, 1, 0, SM4_T_slow); + + store_u32_be(B3, out); + store_u32_be(B2, out + 4); + store_u32_be(B1, out + 8); + store_u32_be(B0, out + 12); +} + +#endif /* OPENSSL_NO_SM4 */ diff --git a/src/lib/libcrypto/sm4/sm4.h b/src/lib/libcrypto/sm4/sm4.h new file mode 100644 index 0000000000..5931ac714b --- /dev/null +++ b/src/lib/libcrypto/sm4/sm4.h @@ -0,0 +1,51 @@ +/* $OpenBSD: sm4.h,v 1.1 2019/03/17 17:42:37 tb Exp $ */ +/* + * Copyright (c) 2017, 2019 Ribose Inc + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef HEADER_SM4_H +#define HEADER_SM4_H + +#include + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef OPENSSL_NO_SM4 +#error SM4 is disabled. +#endif + +#define SM4_DECRYPT 0 +#define SM4_ENCRYPT 1 + +#define SM4_BLOCK_SIZE 16 +#define SM4_KEY_SCHEDULE 32 + +typedef struct sm4_key_st { + unsigned char opaque[128]; +} SM4_KEY; + +int SM4_set_key(const uint8_t *key, SM4_KEY *ks); +void SM4_decrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks); +void SM4_encrypt(const uint8_t *in, uint8_t *out, const SM4_KEY *ks); + +#ifdef __cplusplus +} +#endif + +#endif /* HEADER_SM4_H */ -- cgit v1.2.3-55-g6feb